JP2012161836A - Tig welding method and apparatus therefor - Google Patents
Tig welding method and apparatus therefor Download PDFInfo
- Publication number
- JP2012161836A JP2012161836A JP2011026217A JP2011026217A JP2012161836A JP 2012161836 A JP2012161836 A JP 2012161836A JP 2011026217 A JP2011026217 A JP 2011026217A JP 2011026217 A JP2011026217 A JP 2011026217A JP 2012161836 A JP2012161836 A JP 2012161836A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- permanent magnet
- electrode
- arc
- magnetic field
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/08—Arrangements or circuits for magnetic control of the arc
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
Abstract
Description
本発明は、ＴＩＧ溶接方法およびその装置に関する。より詳細には、被接合物と溶接トーチの電極との間にアーク放電させて溶接アークを発生させ、永久磁石により溶接アークの周囲に磁界を発生させ、磁界と電流との電磁気的相互作用により生じる電磁力を、被接合物の溶融部に作用させ、接合するＴＩＧ溶接方法およびその装置に関する。 The present invention relates to a TIG welding method and an apparatus therefor. More specifically, an arc discharge is generated between the work piece and the electrode of the welding torch to generate a welding arc, and a magnetic field is generated around the welding arc by a permanent magnet, and an electromagnetic interaction between the magnetic field and the current is generated. The present invention relates to a TIG welding method and an apparatus for joining by causing the generated electromagnetic force to act on a melted portion of a workpiece.
被接合物と溶接トーチの電極との間にアーク放電させて溶接アークを発生させ、永久磁石により溶接アークの周囲に磁界を発生させ、該磁界と前記溶接アークに流れるアーク電流との電磁気的相互作用により生じる電磁力を、前記溶接アークに作用させ、被接合物を溶接アークにより溶融して接合するＴＩＧ溶接方法およびその装置として、特許文献１に記載の方法等がある。 An arc discharge is generated between the workpiece and the electrode of the welding torch to generate a welding arc, and a magnetic field is generated around the welding arc by a permanent magnet, and an electromagnetic interaction between the magnetic field and the arc current flowing through the welding arc is generated. As a TIG welding method and apparatus for causing an electromagnetic force generated by the action to act on the welding arc and melting and joining the objects to be joined by the welding arc, there is a method described in Patent Document 1.
しかしながら、特許文献１の溶接方法を使用した場合には、より高いアスペクト比の溶接部断面形状を得ることができない。アスペクト比とは、溶け込み深さＨと平均溶融幅Ｗとの比を言う。また、特許文献１の実施例２（図２）に示されたように、永久磁石を溶接トーチの電極の周囲に配列した場合、溶接アークの放射熱により永久磁石が過熱する場合があるという不具合もある。 However, when the welding method of Patent Document 1 is used, it is not possible to obtain a welded section shape having a higher aspect ratio. The aspect ratio refers to the ratio between the penetration depth H and the average melt width W. Moreover, as shown in Example 2 (FIG. 2) of Patent Document 1, when the permanent magnets are arranged around the electrodes of the welding torch, the permanent magnets may be overheated by the radiant heat of the welding arc. There is also.
本発明は、上記問題に鑑みてなされたものであり、その目的は、より高いアスペクト比の溶接部断面形状を得ることができ、更に溶接アークの放射熱により永久磁石が過熱することを防止できるＴＩＧ溶接方法およびその装置を提供することである。 The present invention has been made in view of the above problems, and the object thereof is to obtain a welded cross-sectional shape with a higher aspect ratio and to prevent the permanent magnet from being overheated by the radiant heat of the welding arc. It is to provide a TIG welding method and apparatus.
本発明の第１形態によれば、ＴＩＧ溶接方法は、
被接合物（５）と溶接トーチ（３）の電極（４）との間にアーク放電させて溶接アーク（８）を発生させ、永久磁石（７）により前記溶接アーク（８）の周囲に磁界を発生させ、該磁界と電流との電磁気的相互作用により生じる電磁力を、被接合物（５）の溶融部（１７）に作用させ接合するＴＩＧ溶接方法において、
前記永久磁石（７）を前記溶接トーチ（３）の前記電極（４）の周囲に配列し、前記永久磁石（７）を移動して前記磁界を変動させることにより溶接することを特徴とする。
According to the first aspect of the present invention, the TIG welding method comprises:
An arc discharge is generated between the workpiece (5) and the electrode (4) of the welding torch (3) to generate a welding arc (8), and a magnetic field is generated around the welding arc (8) by the permanent magnet (7). In the TIG welding method in which the electromagnetic force generated by the electromagnetic interaction between the magnetic field and current is applied to the melted part (17) of the article to be joined (5) and joined.
The permanent magnet (7) is arranged around the electrode (4) of the welding torch (3), and welding is performed by moving the permanent magnet (7) and changing the magnetic field.
永久磁石を溶接トーチの電極の周囲に配列し、永久磁石を移動して磁界を変動させることにより、起電力が生じ渦電流が発生する。この渦電流発生によって溶融部のローレンツ力が増加し内向きの対流駆動力が増加する。このような作用により、高いアスペクト比の溶接部断面形状を得ることができる。更に、永久磁石が移動することにより、周囲の空気と永久磁石との間で熱伝達が加速されて、溶接アークの放射熱により永久磁石が過熱することを防止できる。 By arranging permanent magnets around the electrodes of the welding torch and moving the permanent magnets to change the magnetic field, an electromotive force is generated and an eddy current is generated. Due to this eddy current generation, the Lorentz force in the melted portion increases and the inward convection driving force increases. By such an action, a welded cross-sectional shape having a high aspect ratio can be obtained. Further, the movement of the permanent magnet accelerates the heat transfer between the surrounding air and the permanent magnet, thereby preventing the permanent magnet from being overheated by the radiant heat of the welding arc.
本発明の第２形態によれば、ＴＩＧ溶接方法は、前記永久磁石（７）を前記溶接トーチ（３）の前記電極（４）の軸方向に周期的に往復動させることにより、前記磁界を変動させることを特徴とする。永久磁石の移動形態の一つを示したものである。 According to the second aspect of the present invention, the TIG welding method is configured to periodically reciprocate the permanent magnet (7) in the axial direction of the electrode (4) of the welding torch (3), thereby generating the magnetic field. It is characterized by changing. One of the movement forms of the permanent magnet is shown.
本発明の第３形態によれば、ＴＩＧ溶接装置は、
被接合物（５）と溶接トーチ（３）の電極（４）との間にアーク放電させて溶接アーク（８）を発生させ、前記被接合物（５）を前記溶接アーク（８）により溶融して接合するＴＩＧ溶接装置（１００）において、
前記溶接トーチ（３）の前記電極（４）と、
前記溶接トーチ（３）の前記電極（４）の周囲に配置された永久磁石（７）と、
該永久磁石（７）を前記溶接トーチ（３）の前記電極（４）に対して移動させる永久磁石移動手段（１１〜１５）と、
を備えることを特徴とする。
According to the third embodiment of the present invention, the TIG welding apparatus is
An arc discharge is generated between the workpiece (5) and the electrode (4) of the welding torch (3) to generate a welding arc (8), and the workpiece (5) is melted by the welding arc (8). In the TIG welding apparatus (100) to be joined together,
The electrode (4) of the welding torch (3);
A permanent magnet (7) disposed around the electrode (4) of the welding torch (3);
Permanent magnet moving means (11-15) for moving the permanent magnet (7) relative to the electrode (4) of the welding torch (3);
It is characterized by providing.
永久磁石を溶接トーチの電極の周囲に配列し、永久磁石を移動して磁界を変動させることにより、起電力が生じ渦電流が発生する。この渦電流発生によって溶融部のローレンツ力が増加し内向きの対流駆動力が増加する。このような作用により、高いアスペクト比の溶接部断面形状を得ることができる。更に、永久磁石が移動することにより、周囲の空気と永久磁石との間で熱伝達が加速されて、溶接アークの放射熱により永久磁石が過熱することを防止できる。 By arranging permanent magnets around the electrodes of the welding torch and moving the permanent magnets to change the magnetic field, an electromotive force is generated and an eddy current is generated. Due to this eddy current generation, the Lorentz force in the melted portion increases and the inward convection driving force increases. By such an action, a welded cross-sectional shape having a high aspect ratio can be obtained. Further, the movement of the permanent magnet accelerates the heat transfer between the surrounding air and the permanent magnet, thereby preventing the permanent magnet from being overheated by the radiant heat of the welding arc.
本発明の第４形態によれば、ＴＩＧ溶接装置は、前記永久磁石（７）を前記溶接トーチ（３）の前記電極（４）の軸方向に周期的に往復動させることにより、前記磁界を変動させることを特徴とする。永久磁石の移動形態の一つを示したものである。 According to the fourth aspect of the present invention, the TIG welding apparatus periodically reciprocates the permanent magnet (7) in the axial direction of the electrode (4) of the welding torch (3), thereby generating the magnetic field. It is characterized by changing. One of the movement forms of the permanent magnet is shown.
（第１実施形態）
図１は、電極４と被接合物５との間に磁界を発生させる永久磁石７を設けた本発明のＴＩＧ溶接装置１００の概観図を示す。図１に示すように、ＴＩＧ溶接装置１００は、溶接機本体１に設置されてＴＩＧ溶接電源２の負極が接続される溶接トーチ３の電極４と、被接合物（ワーク）５に接続され正極である電極６が配設されている。イナート（不活性）ガスは、シールドガス容器９から電極４の外周部１６（図２参照）へ供給される。そして、図示しないイナートガスが後述する磁石ハウジング１１と電極４との間から噴出され、溶接アーク８の表面を覆って溶接部が酸化するのを防ぐ。また、溶接トーチ３の電極４の中心軸と被接合物５の被接合部（溶接線部）１０は一致させる。そして、溶接実行中に、ワーク５を、Ｙ方向（溶接線方向）に例えば１０ｍｍ／ｓの速度で移動させる。これにより、溶接線部１０に溶接ビード部が形成される。
(First embodiment)
FIG. 1 shows a schematic view of a TIG welding apparatus 100 of the present invention in which a permanent magnet 7 for generating a magnetic field is provided between an electrode 4 and a workpiece 5. As shown in FIG. 1, a TIG welding apparatus 100 is connected to an electrode 4 of a welding torch 3 that is installed in a welding machine body 1 and to which a negative electrode of a TIG welding power source 2 is connected, and a positive electrode that is connected to an object to be joined (workpiece) 5. The electrode 6 is provided. An inert gas is supplied from the shield gas container 9 to the outer peripheral portion 16 (see FIG. 2) of the electrode 4. Then, an inert gas (not shown) is ejected from between a magnet housing 11 and an electrode 4 to be described later, and covers the surface of the welding arc 8 to prevent the welded portion from being oxidized. Further, the central axis of the electrode 4 of the welding torch 3 and the bonded portion (welded line portion) 10 of the workpiece 5 are matched. Then, during welding, the workpiece 5 is moved in the Y direction (weld line direction) at a speed of 10 mm / s, for example. Thereby, a weld bead part is formed in the weld line part 10.
図２に図１の溶接アーク発生部の模式図を示し、図３に図２の溶接アーク発生部のＡ−Ａ断面図を示す。電極４の先端と被接合物５との間の距離ｘは例えば１ｍｍであり、後述する磁石ハウジング１１の下端面と電極４の先端との間の距離ｙは例えば０.５ｍｍである。図２に示すように、電極４と被接合物５との間に生じる溶接アーク８に影響を及ぼすように、電極４の中心軸から所定の距離だけ離れた位置に永久磁石７が配置されている。 FIG. 2 shows a schematic diagram of the welding arc generating portion of FIG. 1, and FIG. 3 shows a cross-sectional view of the welding arc generating portion of FIG. A distance x between the tip of the electrode 4 and the workpiece 5 is, for example, 1 mm, and a distance y between a lower end surface of a magnet housing 11 described later and the tip of the electrode 4 is, for example, 0.5 mm. As shown in FIG. 2, the permanent magnet 7 is disposed at a position away from the central axis of the electrode 4 by a predetermined distance so as to affect the welding arc 8 generated between the electrode 4 and the workpiece 5. Yes.
永久磁石７は、図２及び図３に示すように、長方形の断面を有する柱状の（直方体の）単一磁石であり、第１実施形態では４個の永久磁石７が電極４の周囲に等間隔にかつ、電極４の中心軸から等しい距離を置いた位置に、磁石ハウジング１１内に配列されている。そして、永久磁石７の磁極（Ｓ磁極とＮ磁極）は柱の両端面に設けられており、図３に示すように平面視において、４個の永久磁石７は、相互に同一磁極が対向するように配置されている。そして、一つの永久磁石７の隣には、一つの永久磁石７の磁極と逆磁極を有する別の永久磁石７が配置されている。なお、磁界の磁力線を溶接アーク８に大量に通過させることが所望の効果を得る上で重要であり、このため、永久磁石７は磁束密度の大きい希土類磁石が好適に採用される。これにより、コンパクトにして強力な磁界が得られる。 2 and 3, the permanent magnet 7 is a columnar (cuboid) single magnet having a rectangular cross section. In the first embodiment, four permanent magnets 7 are arranged around the electrode 4. They are arranged in the magnet housing 11 at intervals and at an equal distance from the central axis of the electrode 4. The magnetic poles (S magnetic pole and N magnetic pole) of the permanent magnet 7 are provided on both end faces of the pillar. As shown in FIG. 3, the four permanent magnets 7 face each other with the same magnetic pole. Are arranged as follows. Next to one permanent magnet 7, another permanent magnet 7 having a magnetic pole opposite to the magnetic pole of one permanent magnet 7 is arranged. It is important to pass a large amount of magnetic field lines through the welding arc 8 in order to obtain a desired effect. For this reason, the permanent magnet 7 is preferably a rare earth magnet having a high magnetic flux density. Thereby, a compact and powerful magnetic field can be obtained.
ＴＩＧ溶接方法は、被接合物５を溶接アーク８により溶融して接合する方法である。溶接アーク８は、電極４と電極６と導通する被接合部１０との間を流れるアーク放電であり、高温のプラズマ状となった荷電粒子の流れである。アーク放電は基本的には電極４と被接合部１０との最短距離の空間に生じ、電極４の中心軸上に発生し釣鐘状の形状を有する。アーク放電自体はプラズマ状となった荷電粒子の流れであり、つまり電流が流れることにより、アーク放電の周りにはこの電流、つまりアーク電流により（永久磁石７により引き起こされる磁界とは別の）磁界が生じる。 The TIG welding method is a method in which the workpiece 5 is melted and joined by the welding arc 8. The welding arc 8 is an arc discharge that flows between the electrode 4 and the bonded portion 10 that is electrically connected to the electrode 6, and is a flow of charged particles in a high-temperature plasma state. The arc discharge basically occurs in the space of the shortest distance between the electrode 4 and the bonded portion 10 and is generated on the central axis of the electrode 4 and has a bell shape. The arc discharge itself is a flow of charged particles in the form of plasma, that is, a current flows, and around this arc, a magnetic field (apart from the magnetic field caused by the permanent magnet 7) due to this current, that is, the arc current. Occurs.
永久磁石で発生する磁界は溶融部に作用する。溶接アークと同様に溶融部も電流が流れており、磁力が発生しているのでローレンツ力が作用する。それは溶融部の対流駆動力の１つとして電磁気力と言われており、溶融部断面で見た場合に外から内向きに働く力で、これが大きくなると深い溶け込み形状を得ることができる。その溶け込みを増幅する方法が磁石を動かすことである。すなわち、磁石を動かすことで起電力が生じ渦電流が発生する。永久磁石による磁力線に加え渦電流発生によってローレンツ力は磁石を動かさない場合と比べて増加する。これにより、溶融部において内向きの対流が増加して高いアスペクト比の溶融部断面形状を得ることが可能となる。
なお、図３に示す永久磁石７の配置により、図４に示すように、磁界が発生して、永久磁石７ａ、７ｂ、７ｃ、７ｄ相互の間に磁力線２１が生じる。そして、溶接アーク８は、磁界とアーク電流（電極４とワーク５との間に発生）の電磁気的相互作用により生じるローレンツ力によって偏向される。この溶接アーク８の偏向方向を溶接線方向Ｙに一致させる。これにより、溶接アーク８は、偏向方向つまり溶接線方向Ｙにアーク放電が有するエネルギの溶接線方向成分を大きく発生させることが可能となる。この作用が、平均溶融幅が狭くかつ溶接部の溶け込みが深くなることを助長し、さらに溶接アーク８の断面形状の周期的変動と相まって、高いアスペクト比の溶接部断面形状を得ることが可能となる。
The magnetic field generated by the permanent magnet acts on the melting part. Similarly to the welding arc, a current flows through the melted portion, and a magnetic force is generated, so a Lorentz force acts. It is said to be an electromagnetic force as one of the convection driving forces of the melted part, and is a force that works inward from the outside when viewed from the cross section of the melted part. When this is increased, a deep penetration shape can be obtained. The method of amplifying the penetration is to move the magnet. That is, an electromotive force is generated by moving the magnet, and an eddy current is generated. The Lorentz force is increased by the generation of eddy current in addition to the lines of magnetic force of the permanent magnet compared to the case where the magnet is not moved. As a result, inward convection increases in the melted portion, and a cross-sectional shape of the melted portion having a high aspect ratio can be obtained.
In addition, by arrangement | positioning of the permanent magnet 7 shown in FIG. 3, as shown in FIG. 4, a magnetic field generate | occur | produces and the magnetic force line 21 arises between permanent magnets 7a, 7b, 7c, and 7d. The welding arc 8 is deflected by the Lorentz force generated by the electromagnetic interaction between the magnetic field and the arc current (generated between the electrode 4 and the workpiece 5). The deflection direction of the welding arc 8 is matched with the welding line direction Y. As a result, the welding arc 8 can greatly generate the welding line direction component of the energy of the arc discharge in the deflection direction, that is, the welding line direction Y. This action promotes that the average melt width is narrow and the penetration of the welded portion is deepened. Further, coupled with the periodic variation of the sectional shape of the welding arc 8, it is possible to obtain a welded sectional shape having a high aspect ratio. Become.
磁石ハウジング１１は、図２、３に示すように、円筒形をしており、４個の永久磁石７を摺動自在に収容する４つの穴１１ａ、１１ｂ、１１ｃ、１１ｄを有する。１つの永久磁石７ａは、磁石ハウジング１１の収容穴１１ａ内に上下に摺動自在に収容されている。収容穴１１ａは、永久磁石７ａによりその空間を分離されて、永久磁石７ａの上側に空間１１ａａをその下側に空間１１ａｂを有する。収容穴１１ｂ、１１ｃ、１１ｄも収容穴１１ａと同様な構造になっている。そして、４個の永久磁石７の上側空間１１ａａ、１１ｂａ、１１ｃａ、１１ｄａは、所定の通路（図示せず）により接続されており、その下側空間１１ａｂ、１１ｂｂ、１１ｃｂ、１１ｄｂも、別な通路（図示せず）により接続されている。そして、下側空間、例えば１１ａｂの下端には空気通路１２が、上側空間、例えば１１ａａの上端には空気通路１３が接続されている。この構造により、４個の永久磁石７ａ、７ｂ、７ｃ、７ｄが同期して上下に移動することが可能となる。 As shown in FIGS. 2 and 3, the magnet housing 11 has a cylindrical shape and has four holes 11 a, 11 b, 11 c, and 11 d that slidably accommodate the four permanent magnets 7. One permanent magnet 7 a is accommodated in the accommodation hole 11 a of the magnet housing 11 so as to be slidable up and down. The accommodation hole 11a is separated by the permanent magnet 7a, and has a space 11aa on the upper side of the permanent magnet 7a and a space 11ab on the lower side. The accommodation holes 11b, 11c, and 11d have the same structure as the accommodation hole 11a. The upper spaces 11aa, 11ba, 11ca, 11da of the four permanent magnets 7 are connected by a predetermined passage (not shown), and the lower spaces 11ab, 11bb, 11cb, 11db are also different passages. (Not shown). An air passage 12 is connected to the lower space, for example, the lower end of 11ab, and an air passage 13 is connected to the upper space, for example, the upper end of 11aa. With this structure, the four permanent magnets 7a, 7b, 7c, and 7d can move up and down synchronously.
空気通路１３には、図５（ａ）に示すような、大気圧と１ＭＰａとの間を周期的に変動する脈動空気圧（パルス空気圧）１５が空圧制御手段（図示せず）により印加され、空気通路１２には、図５（ｂ）に示すような大気圧より高く１ＭＰａより低い一定の空気圧１４が印加される。上記脈動空気圧の周期は例えば１５Ｈｚである。この脈動空気圧により、１つの永久磁石７ａは、溶接トーチ３の電極４の軸方向に周期的に往復動することとなる。そして、磁石ハウジング１１の４つの穴１１ａ、１１ｂ、１１ｃ、１１ｄが上記のような構造となっているため、他の永久磁石７ｂ、７ｃ、７ｄも、永久磁石７ａの動きと同期する動きをすることとなる。なお、永久磁石７が往復動する距離は例えば０.５ｍｍである。 A pulsating air pressure (pulsed air pressure) 15 that periodically fluctuates between atmospheric pressure and 1 MPa is applied to the air passage 13 by air pressure control means (not shown), as shown in FIG. A constant air pressure 14 that is higher than atmospheric pressure and lower than 1 MPa is applied to the air passage 12 as shown in FIG. The period of the pulsating air pressure is 15 Hz, for example. With this pulsating air pressure, one permanent magnet 7 a periodically reciprocates in the axial direction of the electrode 4 of the welding torch 3. Since the four holes 11a, 11b, 11c, and 11d of the magnet housing 11 have the above-described structure, the other permanent magnets 7b, 7c, and 7d also move in synchronization with the movement of the permanent magnet 7a. It will be. The distance that the permanent magnet 7 reciprocates is, for example, 0.5 mm.
この永久磁石７の周期的な往復動により、溶融部１７に起電力が生じ渦電流が発生する。この渦電流発生によって溶融部のローレンツ力が増加し内向きの対流駆動力が増加する。さらに、溶接部に加えられるアーク放電によるプラズマが周期的に変動して、溶接部に非定常な熱流れが発生して、溶け込みの十分深い良好な溶接部が得られ高いアスペクト比の溶接部断面形状を得ることができる。更に、永久磁石が移動することにより、周囲の空気と永久磁石との間で熱伝達が加速されて、溶接アークの放射熱により永久磁石が過熱することを防止できる。 Due to the periodic reciprocation of the permanent magnet 7, an electromotive force is generated in the melting part 17 and an eddy current is generated. Due to this eddy current generation, the Lorentz force in the melted portion increases and the inward convection driving force increases. Furthermore, the plasma caused by arc discharge applied to the welded portion periodically fluctuates, and an unsteady heat flow is generated in the welded portion. Shape can be obtained. Further, the movement of the permanent magnet accelerates the heat transfer between the surrounding air and the permanent magnet, thereby preventing the permanent magnet from being overheated by the radiant heat of the welding arc.
図６は、本発明に係るＴＩＧ溶接方法による溶接断面部の写真であり、図７は従来の（永久磁石固定式の）ＴＩＧ溶接方法による溶接断面部の写真である。本発明に係るＴＩＧ溶接方法による溶接断面部は、従来のものより明らかに溶融部が深くなっていることが分かる。 FIG. 6 is a photograph of a weld cross section by a TIG welding method according to the present invention, and FIG. 7 is a photograph of a weld cross section by a conventional (fixed permanent magnet type) TIG welding method. It can be seen that the weld cross-section by the TIG welding method according to the present invention is clearly deeper than the conventional one.
（他の実施形態）
第１実施形態では、永久磁石７の周期的な往復動を空気圧制御により実施したが、空気圧制御ではなく、例えばモーターを使用したカム駆動により周期的な往復動を実施しても良い。すなわち、永久磁石７の周期的な往復動を達成するために、空圧、油圧、機械駆動等いずれの手段を用いても良いことは、当業者が容易に想到することである。
また、第１実施形態では、永久磁石７の周期的な往復動を用いたが、周期的ではなくランダムに（不規則に）往復動させても良く、また、往復動ではなく例えば磁石ハウジング１１を電極４を中心として回転させることにより永久磁石を回転（公転）させても良い。
また、第１実施形態では４個の永久磁石７を等間隔に規則的に配置したが不規則に配置しても良い。
(Other embodiments)
In the first embodiment, the periodic reciprocation of the permanent magnet 7 is performed by air pressure control. However, instead of the air pressure control, for example, periodic reciprocation may be performed by cam drive using a motor. That is, those skilled in the art can easily conceive that any means such as air pressure, hydraulic pressure, and mechanical drive may be used to achieve periodic reciprocation of the permanent magnet 7.
In the first embodiment, the periodic reciprocation of the permanent magnet 7 is used. However, the permanent magnet 7 may be reciprocated randomly (irregularly) instead of periodically. The permanent magnet may be rotated (revolved) by rotating the magnet around the electrode 4.
In the first embodiment, the four permanent magnets 7 are regularly arranged at equal intervals, but may be irregularly arranged.
１００ 本発明のＴＩＧ溶接装置
３ 溶接トーチ
４ 溶接トーチの電極
５ ワーク（被接合物）
７ 永久磁石
８ 溶接アーク
１１ 磁石ハウジング
１７ 溶融部
DESCRIPTION OF SYMBOLS 100 TIG welding apparatus of this invention 3 Welding torch 4 Electrode of welding torch 5 Workpiece (object to be joined)
7 Permanent magnet 8 Welding arc 11 Magnet housing 17 Melting zone
Claims (4)
前記永久磁石（７）を前記溶接トーチ（３）の前記電極（４）の周囲に配列し、前記永久磁石（７）を移動して前記磁界を変動させることにより溶融部（１７）に付与されるローレンツ力を変化させて溶接することを特徴とするＴＩＧ溶接方法。 An arc discharge is generated between the workpiece (5) and the electrode (4) of the welding torch (3) to generate a welding arc (8), and a magnetic field is generated around the welding arc (8) by the permanent magnet (7). In the TIG welding method in which the electromagnetic force generated by the electromagnetic interaction between the magnetic field and current is applied to the melted part (17) of the article (5) and joined.
The permanent magnet (7) is arranged around the electrode (4) of the welding torch (3), and is moved to the melting part (17) by moving the permanent magnet (7) and changing the magnetic field. A TIG welding method, wherein welding is performed by changing the Lorentz force.
前記溶接トーチ（３）の前記電極（４）と、
前記溶接トーチ（３）の前記電極（４）の周囲に配置された永久磁石（７）と、
該永久磁石（７）を前記溶接トーチ（３）の前記電極（４）に対して移動させる永久磁石移動手段（１１〜１５）と、
を備えることを特徴とするＴＩＧ溶接装置（１００）。 An arc discharge is generated between the workpiece (5) and the electrode (4) of the welding torch (3) to generate a welding arc (8), and the workpiece (5) is melted by the welding arc (8). In the TIG welding apparatus (100) to be joined together,
The electrode (4) of the welding torch (3);
A permanent magnet (7) disposed around the electrode (4) of the welding torch (3);
Permanent magnet moving means (11-15) for moving the permanent magnet (7) relative to the electrode (4) of the welding torch (3);
A TIG welding apparatus (100) comprising:
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011026217A JP5353921B2 (en) | 2011-02-09 | 2011-02-09 | TIG welding method and apparatus |
| US13/366,822 US9061364B2 (en) | 2011-02-09 | 2012-02-06 | TIG welding method and apparatus |
| CN201210028365.6A CN102632325B (en) | 2011-02-09 | 2012-02-09 | Tig welding method and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011026217A JP5353921B2 (en) | 2011-02-09 | 2011-02-09 | TIG welding method and apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2012161836A true JP2012161836A (en) | 2012-08-30 |
| JP5353921B2 JP5353921B2 (en) | 2013-11-27 |
Family
ID=46599951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2011026217A Active JP5353921B2 (en) | 2011-02-09 | 2011-02-09 | TIG welding method and apparatus |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US9061364B2 (en) |
| JP (1) | JP5353921B2 (en) |
| CN (1) | CN102632325B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105555006A (en) * | 2016-02-16 | 2016-05-04 | 衢州迪升工业设计有限公司 | Electrode applying fuse striking arc |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6091974B2 (en) * | 2013-04-16 | 2017-03-08 | 株式会社神戸製鋼所 | Welding manufacturing method, welding method, welding apparatus |
| CN106735781B (en) * | 2016-12-14 | 2018-11-30 | 天津大学 | A kind of magnetic control K-TIG welding gun based on electromagnet cusp magnetic fields |
| CN107052533B (en) * | 2016-12-15 | 2018-11-30 | 天津大学 | A kind of magnetic control K-TIG welding gun based on permanent magnet array |
| CN106695086B (en) * | 2016-12-15 | 2018-11-30 | 天津大学 | A kind of magnetic control K-TIG welding gun based on water-cooling permanent magnet iron |
| CN108856973B (en) * | 2018-06-14 | 2020-12-04 | 温州大学 | Electric arc welding system capable of adjusting external magnetic field |
| CN110449699A (en) * | 2019-08-15 | 2019-11-15 | 广东省智能制造研究所 | A kind of multilayer wedge angle magnetic control welding generating device and welding gun |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0195877A (en) * | 1987-10-07 | 1989-04-13 | Ishikawajima Harima Heavy Ind Co Ltd | Method for welding austenitic alloy or the like |
| JPH0966365A (en) * | 1995-09-01 | 1997-03-11 | Ishikawajima Harima Heavy Ind Co Ltd | Magnetic stirring welding method |
| JP2005279760A (en) * | 2004-03-30 | 2005-10-13 | Aisin Seiki Co Ltd | Control method of charged particle flow, and control method of molten metal |
| JP2008105056A (en) * | 2006-10-25 | 2008-05-08 | Denso Corp | Tig welding method, and equipment therefor |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54152643A (en) | 1978-05-24 | 1979-12-01 | Nippon Steel Corp | Deflecting method for welding arc |
| GB2038687B (en) | 1978-12-07 | 1982-08-11 | Central Electr Generat Board | Magnetic stirring in tie welding |
| GB2038686B (en) | 1978-12-07 | 1982-08-11 | Central Electr Generat Board | Stirring an arc welding pool |
| JPH0195876A (en) | 1987-10-06 | 1989-04-13 | Ishikawajima Harima Heavy Ind Co Ltd | Method for welding austenitic alloy or the like |
| JPH0437478A (en) | 1990-05-31 | 1992-02-07 | Mitsubishi Heavy Ind Ltd | Ultrasonic vibration arc welding method |
| JPH0584571A (en) | 1991-09-26 | 1993-04-06 | Sumitomo Metal Ind Ltd | Arc generator |
| JPH05146875A (en) | 1991-11-28 | 1993-06-15 | Toyota Motor Corp | Spatter generation suppressing device for arc welding machine |
| JPH0732146A (en) | 1993-07-15 | 1995-02-03 | Toyota Motor Corp | Method and device for detecting arc blow in arc welding |
| JPH07195176A (en) | 1993-12-29 | 1995-08-01 | Nissan Motor Co Ltd | Arc welding equipment |
| JPH08338207A (en) | 1995-06-15 | 1996-12-24 | Mitsubishi Heavy Ind Ltd | Exhaust heat recovery device |
| JP2953367B2 (en) | 1995-12-29 | 1999-09-27 | 日本電気株式会社 | LSI cooling system |
| JPH09239537A (en) | 1996-03-11 | 1997-09-16 | Fujikura Ltd | Manufacture of tube by welding |
| US5831364A (en) * | 1997-01-22 | 1998-11-03 | Ingersoll-Dresser Pump Company | Encapsulated magnet carrier |
| KR20020042118A (en) * | 2000-11-30 | 2002-06-05 | 에릭 발리베 | A holder for magnet fixing of starter motor |
| US6601643B2 (en) | 2001-04-27 | 2003-08-05 | Samsung Electronics Co., Ltd | Flat evaporator |
| KR20040088554A (en) | 2002-02-26 | 2004-10-16 | 미크로스 매뉴팩처링 인코포레이티드 | Capillary evaporator |
| JP2005211919A (en) | 2004-01-28 | 2005-08-11 | Aisin Seiki Co Ltd | Control method for charged particle flow, control method for welding arc and plasma, and control method for molten metal |
| JP2007095762A (en) | 2005-09-27 | 2007-04-12 | Matsushita Electric Ind Co Ltd | Flexible heat pipe |
| JP2008153423A (en) | 2006-12-18 | 2008-07-03 | Yaskawa Electric Corp | Vapor chamber, and electronic device using it |
| JP2008267743A (en) | 2007-04-24 | 2008-11-06 | Denso Corp | Cooling device and its manufacturing method |
-
2011
- 2011-02-09 JP JP2011026217A patent/JP5353921B2/en active Active
-
2012
- 2012-02-06 US US13/366,822 patent/US9061364B2/en active Active
- 2012-02-09 CN CN201210028365.6A patent/CN102632325B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0195877A (en) * | 1987-10-07 | 1989-04-13 | Ishikawajima Harima Heavy Ind Co Ltd | Method for welding austenitic alloy or the like |
| JPH0966365A (en) * | 1995-09-01 | 1997-03-11 | Ishikawajima Harima Heavy Ind Co Ltd | Magnetic stirring welding method |
| JP2005279760A (en) * | 2004-03-30 | 2005-10-13 | Aisin Seiki Co Ltd | Control method of charged particle flow, and control method of molten metal |
| JP2008105056A (en) * | 2006-10-25 | 2008-05-08 | Denso Corp | Tig welding method, and equipment therefor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105555006A (en) * | 2016-02-16 | 2016-05-04 | 衢州迪升工业设计有限公司 | Electrode applying fuse striking arc |
Also Published As
| Publication number | Publication date |
|---|---|
| US20120199561A1 (en) | 2012-08-09 |
| JP5353921B2 (en) | 2013-11-27 |
| US9061364B2 (en) | 2015-06-23 |
| CN102632325A (en) | 2012-08-15 |
| CN102632325B (en) | 2015-10-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5353921B2 (en) | TIG welding method and apparatus | |
| CN108247226B (en) | Laser welding pool control method based on Lorentz force | |
| US7235758B2 (en) | MIG-plasma welding | |
| JP5934890B2 (en) | Arc welding control method | |
| JP6082967B2 (en) | Plasma cutting machine and cutting method | |
| CN108788419B (en) | Split type magnetic control resistance spot welding device | |
| JP5128159B2 (en) | Resistance welding method | |
| IN2014DN06764A (en) | ||
| CN110814552A (en) | Scanning galvanometer laser-high frequency pulse TIG (tungsten inert gas) hybrid welding method | |
| KR20140071360A (en) | Stud welding method and apparatus for welding a component to a surface of a workpiece with varying general magnetic field angle | |
| JP2005324246A (en) | Welding tool, welding apparatus, and welding method | |
| KR20180043284A (en) | Welding method and arc welding device | |
| JP2011161509A (en) | Plasma arc welding method, multi-pass welding method, and equipment therefor | |
| CN113102891B (en) | Method and device for inhibiting aluminum alloy laser-MIG (Metal-inert gas) composite welding collapse by external magnetic field | |
| Nomura et al. | Influence of magnet configurations on magnetic controlled TIG arc welding | |
| JP2015112636A (en) | Build-up welding device and method thereof | |
| CN105880807A (en) | TIG filler wire narrow-gap welding method utilizing bypass arc induction | |
| CN108817670A (en) | A kind of electric arc combined weldering energy modulation welding method of high power laser light | |
| CN203184841U (en) | Laser-TIG electric arc paraxial hybrid welding device with external high frequency magnetic field | |
| TWI406732B (en) | Magnetic field assisted laser plasma device | |
| Sun et al. | Research status and development trend of narrow-Gap TIG welding | |
| JP5871675B2 (en) | Arc welding apparatus and arc welding method | |
| JP2005211919A (en) | Control method for charged particle flow, control method for welding arc and plasma, and control method for molten metal | |
| JP5287962B2 (en) | Welding equipment | |
| JP5419858B2 (en) | Magnetic field strength adjustment method for arc welding |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20120911 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20130111 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20130129 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20130326 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20130730 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20130812 |
|
| R151 | Written notification of patent or utility model registration |
Ref document number: 5353921 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R151 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |